<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- /课程详情 开始 -->
    <section class="container">
      <section class="path-wrap txtOf hLh30">
        <a href="#" title class="c-999 fsize14">首页</a>
        \
        <a href="#" title class="c-999 fsize14">{{courseWebVo.subjectLevelOne}}</a>
        \
        <span class="c-333 fsize14">{{courseWebVo.subjectLevelTwo}}</span>
      </section>
      <div>
        <article class="c-v-pic-wrap" style="height: 357px;">
          <section class="p-h-video-box" id="videoPlay">
            <img height="357px" :src="courseWebVo.cover" :alt="courseWebVo.title" class="dis c-v-pic">
          </section>
        </article>
        <aside class="c-attr-wrap">
          <section class="ml20 mr15">
            <h2 class="hLh30 txtOf mt15">
              <span class="c-fff fsize24">{{courseWebVo.title}}</span>
            </h2>
            <section class="c-attr-jg">
              <span class="c-fff">价格：</span>
              <b class="c-yellow" style="font-size:24px;">￥{{courseWebVo.price}}</b>
            </section>
            <section class="c-attr-mt c-attr-undis">
              <span class="c-fff fsize14">主讲： {{courseWebVo.teacherName}}&nbsp;&nbsp;&nbsp;</span>
            </section>
            <section class="c-attr-mt of">
              <span class="ml10 vam">
                <em class="icon18 scIcon"></em>
                <a class="c-fff vam" title="收藏" href="#" @click="collectCourse(courseWebVo.id)">收藏</a>
              </span>
            </section>
            <section class="c-attr-mt" v-if="isbuy || Number(courseWebVo.price) === 0">
              <a href="'/player/' + 'a06d1d14030871f0bfe35017f1f80102'" title="立即观看" class="comm-btn c-btn-3">立即观看</a>
            </section>
            <section class="c-attr-mt" v-else>
              <a href="#" @click="createOrders()" title="立即购买" class="comm-btn c-btn-3">立即购买</a>
            </section>
          </section>
        </aside>
        <aside class="thr-attr-box">
          <ol class="thr-attr-ol">
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">购买数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{courseWebVo.buyCount}}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">课时数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{courseWebVo.lessonNum}}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">浏览数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{courseWebVo.viewCount}}</h6>
              </aside>
            </li>
          </ol>
        </aside>
        <div class="clear"></div>
      </div>
      <!-- /课程封面介绍 -->
      <div class="mt20 c-infor-box">
        <article class="fl col-7">
          <section class="mr30">
            <div class="i-box">
              <div>
                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                  <a name="c-i" class="current" title="课程详情">课程详情</a>
                </section>
              </div>
              <article class="ml10 mr10 pt20">
                <div>
                  <h6 class="c-i-content c-infor-title">
                    <span>课程介绍</span>
                  </h6>
                  <div class="course-txt-body-wrap">
                    <section class="course-txt-body">
                      <p>
                        <span v-html="courseWebVo.description"></span>
                      </p>
                    </section>
                  </div>
                </div>
                <!-- /课程介绍 -->
                <div class="mt50">
                  <h6 class="c-g-content c-infor-title">
                    <span>课程大纲</span>
                  </h6>
                  <section class="mt20">
                    <div class="lh-menu-wrap">
                      <menu id="lh-menu" class="lh-menu mt10 mr10">
                        <ul>
                          <!-- 文件目录 -->
                          <li class="lh-menu-stair" v-for="chapter in chapterVideoList" :key="chapter.id">
                            <a href="javascript: void(0)" :title="chapter.title" class="current-1">
                              <em class="lh-menu-i-1 icon18 mr10"></em>{{chapter.title}}
                            </a>
                            <ol class="lh-menu-ol" style="display: block;">
                              <li class="lh-menu-second ml30" v-for="video in chapter.children" :key="video.id">
                                <a :href="'/player/'+video.videoSourceId" target="_blank">
                                  <span class="fr">
                                    <i class="free-icon vam mr10">免费试听</i>
                                  </span>
                                  <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{video.title}}
                                </a>
                              </li>
                            </ol>
                          </li>
                        </ul>
                      </menu>
                    </div>
                  </section>
                </div>
                <!-- /课程大纲 -->
              </article>
            </div>
          </section>
        </article>
        <aside class="fl col-3">
          <div class="i-box">
            <div>
              <section class="c-infor-tabTitle c-tab-title">
                <a title href="javascript:void(0)">主讲讲师</a>
              </section>
              <section class="stud-act-list">
                <ul style="height: auto;">
                  <li>
                    <div class="u-face">
                      <a :href="'/teacher/'+ courseWebVo.teacherId" target="_blank">
                        <img :src="courseWebVo.avatar" width="50" height="50" alt>
                      </a>
                    </div>
                    <section class="hLh30 txtOf">
                      <a class="c-333 fsize16 fl" :href="'/teacher/'+ courseWebVo.teacherId">{{courseWebVo.teacherName}}</a>
                    </section>
                    <section class="hLh20 txtOf">
                      <span class="c-999">{{courseWebVo.intro}}</span>
                    </section>
                  </li>
                </ul>
              </section>
            </div>
          </div>
        </aside>
        <div class="clear"></div>
      </div>
    </section>
    <!-- /课程详情 结束 -->
	<!-- 课程评论 -->
	<div class="mt50 commentHtml">
	  <div>
	    <h6 class="c-c-content c-infor-title" id="i-art-comment">
	      <span class="commentTitle">💬课程评论</span>
	    </h6>
	    <section class="lh-bj-list pr mt20 replyhtml">
	      <ul>
	        <li class="unBr">
	          <aside class="noter-pic">
	            <img
	              width="50"
	              height="50"
	              class="picImg"
	              src="~/assets/img/avatar-boy.gif"
	            />
	          </aside>
	          <div class="of">
	            <section class="n-reply-wrap">
	              <fieldset>
	                <textarea
	                  name=""
	                  v-model="comment.content"
	                  placeholder="输入您要评论的文字"
	                  id="commentContent"
	                ></textarea>
	              </fieldset>
	              <p class="of mt5 tar pl10 pr10">
	                <span class="fl"
	                  ><tt
	                    class="c-red commentContentmeg"
	                    style="display: none"
	                  ></tt
	                ></span>
	                <input
	                  type="button"
	                  @click="addComment()"
	                  value="回复"
	                  class="lh-reply-btn"
	                />
	              </p>
	            </section>
	          </div>
	        </li>
	      </ul>
	    </section>
	    <section class="">
	      <section class="question-list lh-bj-list pr">
	        <ul class="pr10">
	          <li v-for="(comment, index) in data.records" v-bind:key="index">
	            <aside class="noter-pic">
	              <img
	                width="50"
	                height="50"
	                class="picImg"
	                :src="comment.avatar"
	              />
	            </aside>
	            <div class="of">
	              <span class="fl">
	                <font class="fsize12 c-blue"> {{ comment.nickname }}</font>
	                <font class="fsize12 c-999 ml5">评论：</font></span
	              >
	            </div>
	            <div class="noter-txt mt5">
	              <p>{{ comment.content }}</p>
	            </div>
	            <div class="of mt5">
	              <span class="fr"
	                ><font class="fsize12 c-999 ml5">{{
	                  comment.gmtCreate
	                }}</font></span
	              >
	            </div>
	          </li>
	        </ul>
	      </section>
	    </section>
	
	    <!-- 公共分页 开始 -->
	    <div class="paging">
	      <!-- undisable这个class是否存在，取决于数据属性hasPrevious -->
	      <a
	        :class="{ undisable: !data.hasPrevious }"
	        href="#"
	        title="首页"
	        @click.prevent="gotoPage(1)"
	        >首</a
	      >
	      <a
	        v-if="data.hasPrevious"
	        href="#"
	        title="前一页"
	        @click.prevent="gotoPage(data.current - 1)"
	        >&lt;</a
	      >
	      <a
	        v-for="page in data.pages"
	        :key="page"
	        :class="{
	          current: data.current == page,
	          undisable: data.current == page,
	        }"
	        :title="'第' + page + '页'"
	        href="#"
	        @click.prevent="gotoPage(page)"
	        >{{ page }}</a
	      >
	      <a
	        v-if="data.hasNext"
	        href="#"
	        title="后一页"
	        @click.prevent="gotoPage(data.current + 1)"
	        >&gt;</a
	      >
	      <a
	        :class="{ undisable: !data.hasNext }"
	        href="#"
	        title="末页"
	        @click.prevent="gotoPage(data.pages)"
	        >末</a
	      >
	      <div class="clear" />
	    </div>
	    <!-- 公共分页 结束 -->
	  </div>
	</div>
	<!-- 课程评论 结束 -->
  </div>
</template>

<script>

import courseApi from '@/api/course'
import commentApi from '@/api/comment'
import ordersApi from '@/api/orders'
export default {

  asyncData({params,error}){ //params就是路由
    return {courseId:params.id}
  },

  data() {
    return {
		data:{},
		page:1,
		limit:4,
		total:10,
		comment:{
		  content:'',
		  courseId:'',
		  teacherId :''
		},
        courseWebVo:{},
        chapterVideoList:[],
        isbuy:false
    }
  },

  created(){
    this.initCourseInfo()
	this.initComment()
  },

  methods:{
		// 收藏课程
		collectCourse(courseId) {
		  courseApi.collect(courseId).then(response => {
		     if(response.success) {
		         //提示信息
		        this.$message({
		          type : 'success',
		          message : '收藏成功'
		        })
		     } else {
		        //提示信息
		        this.$message({
		          type : 'error',
		          message : '该课程已收藏'
		        })
		     }
		  })
		},

    //查询课程详情信息
    initCourseInfo(){
      courseApi.getCourseInfo(this.courseId)
      .then(response => {
          this.courseWebVo=response.data.data.courseWebVo,
          this.chapterVideoList=response.data.data.chapterVideoList,
          this.isbuy=response.data.data.isBuy
      })
    },
	
	//获取评论
	initComment() {
	  commentApi.getPageList(this.page,this.limit,this.courseId).then(response => {
	    this.data = response.data.data
	  })
	},
	
	//添加评论
	addComment() {
	
	  if(this.comment.content == '') {
	    alert("请输入评论");
	  }else{
	     this.comment.courseId = this.courseId
	     this.comment.teacherId = this.courseWebVo.teacherId
	    commentApi.addComment(this.comment).then(response => {
	
	      if(response.data.success) {
	
	         //提示信息
	        this.$message({
	          type : 'success',
	          message : '评论成功'
	        })
	
	        //清空评论框
	        this.comment.content = ''
	
	        //刷新评论列表
	        this.initComment()
	  
	      }else{
	        //提示信息
	        this.$message({
	          type : 'error',
	          message : '请先登录'
	        })
	      }
	    })
	  }
	},
	
	gotoPage(page){
	  commentApi.getPageList(page, this.limit,this.courseId).then(response => {
	      this.data = response.data.data
	  })
	},
	

    //生成订单的方法
    createOrders(){
      ordersApi.createOrders(this.courseId)
        .then(response =>{
          //获取返回的订单号
          //response.data.data.orderId

          //生成订单之后，跳转订单显示页面
          this.$router.push({path:'/orders/' +  response.data.data.orderId })
        })
    }
  }

};
</script>
